Search results for "Autor"
showing 10 items of 820 documents
A Two-Dimensional Autoregressive Model for MIMO Wideband Mobile Radio Channels
2008
In this work, we propose the multichannel two- dimensional (2D) autoregressive (AR) model for multiple-input multiple-output (MIMO) wideband mobile wireless channels. The parameters of the proposed model can be estimated from the real- world measurement data. For this purpose, we suggest using a straightforward extension of the prediction error minimization (PEM) algorithm. We also address the problem of possible instability of the multichannel 2D AR model. A model stabilization procedure based on numerical optimization techniques is proposed. The performance of the multichannel 2D AR model has been evaluated based on the synthetic data generated using two different channel simulators.
Decomposing and Interpreting Spatial Effects in Spatio-Temporal Analysis: Evidences for Spatial Data Pooled Over Time
2017
Empirical applications using individual spatial data pooled over time usually neglect the fact that such data are not only spatially localized: they are also collected over time, i.e. temporally localized. So far, little effort has been devoted to proposing a global way for dealing with spatial data (cross-section) pooled over time, such as real estate transactions, business start-up, crime and so on. However, the spatial effect, in such a context, can be decomposed in two different components: a multidirectional spatial effect (same time period) and a unidirectional spatial effect (previous time period). Based on real estate literature, this chapter presents different spatio-temporal autor…
A Comprehensive Spatiotemporal Framework for Hedonic Pricing: Integrating the Comparable Sales Approach and Minimizing Spatial Omitted Variable Bias
2019
This paper develops a theoretical and methodological framework that integrates Hedonic Pricing (HP), grid comparable sales approach (CSA), and nearest neighbors into a general spatiotemporal specification. By explicitly providing a theoretical justification for introducing spatial (or spatiotemporal) econometrics to HP, this approach is not only relevant to house price forecasting and automated valuation models (AVM) but also to valuing environmental goods capitalized in housing and to all other fields employing house pricing models. The resulting econometric CSA and spatiotemporal Durbin models provide higher prediction accuracy and reliability to alternatives by reducing the spatially-del…
Autoritarisme de dretes: antecedents i perspectives de futur
2012
Aquest article presenta els principals antecedents per a l'estudi psicològic de l'autoritarisme de dretes. Per a tal fi es parteix dels treballs del Grup de Berkeley (1950) sobre la personalitat autoritària, posteriorment s'introdueix el concepte de dogmatisme proposat per Rokeach (1960) i després es comenten les aportacions d'Altemeyer (1981, 2004) sobre l'autoritarisme de dretes. Després es discuteix la possibilitat de l'estudi de l'autoritarisme en el continu ideològic d'esquerres i finalment s'exposen alguns dels avanços de l'última dècada sobre la dimensionalitat del constructe (Funke 2005, Mavor, Louis & Laythe 2011, Smith & Winter 2002), que permetrà avançar en l'esclariment del conf…
Introduzione
2007
COVID-19, COMPENSAZIONE DEL CONTROLLO E RWA
El enemigo principal
1981
Hans Kelsen, estado de exceção e Copa do Mundo no Brasil
2014
RESUMEN. Este trabajo presenta la situación de excepción económica creada en Brasil al hilo de la realización de los llamados “grandes eventos”, en particular la Copa del Mundo de 2014, que ha registrado la suspensión de diversos derechos y garantías fundamentales del derecho brasileño con objeto de garantizar la explotación económica monopólica del evento por la FIFA. El marco teórico del artículo se basa en la Teoría Pura del Derecho de Kelsen, que al ejemplificar una teoría del derecho de la normalidad, en la que la excepción no tiene espacio, sirve perfectamente de contra-paradigma para analizar el escenario político-legal autoritario que se ha introducido en Brasil, el cual se aborda b…
Indipendenza istituzionale e autonomia organizzativa delle Autorità Regolative pubbliche
2006
Le intese restrittive della concorrenza nell'attività dell'AGCM (anno 2012)
2013
La rassegna analizza sinteticamente le decisioni in materia di intese restrittive della concorrenza, adottate, nel corso del 2012, dall’Autorità garante della concorrenza e del mercato (qui di seguito « Agcm »). In quest’arco temporale, non si ravvisa alcuna significativa inversione di tendenza nella prassi dell’Agcm; in particolar modo, per quel che concerne le nozioni di « pregiudizio al commercio tra gli Stati membri », « mercato rilevante », « impresa » e « intesa », ai sensi dell’art. 2 della l. n. 287/1990 e dell’art. 101 del Tfue. Si segnala, inoltre, il fatto che, in ottemperanza ad alcune decisioni del tribunale amministrativo, in più occasioni l’Agcm ha dovuto rideterminare le san…